Washing machines produce horrendous amounts of positive ions, not negative ions. Positive ions are harmful to our health and negative ions are beneficial.
Yup - one reason at least. The crime + suicide rate also tends to be considerably higher during full moons [statistically significant].Positive Ions during full moon... is that why we (as humans) get a little crazier during full moon? This has been my personal experience. I've also heard from members of the police force that full moon, people ALWAYS get a little crazier.